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Discontinued Operations (Details 1) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Current assets of discontinued operations:    
Total current assets of discontinued operations $ 75 $ 171
Current liabilities of discontinued operations:    
Total current liabilities of discontinued operations 75 75
ALIGN products    
Current assets of discontinued operations:    
Short-term portion of minimum royalty arrangement receivable, net   96
Returns indemnification receivable 75 75
Total current assets of discontinued operations $ 75 $ 171
Long-term assets of discontinued operations:    
Long-term portion of minimum royalty arrangement receivable, net
Total assets of discontinued operations $ 75 $ 171
Current liabilities of discontinued operations:    
Returns provision 75 75
Total current liabilities of discontinued operations $ 75 $ 75